Tractor plow



Dec. 26, 1933. A. c. LINDGREN ET AL TRACTOR PLOW Filed March 16, 1933 2 Sheets-Sheet 1 Dec. 26, 1933.

A. C. LINDGREN ET AL TRACTOR PLOW Fild March 16, 1955 2 Sheets-Sheet 2 ,m ,9 4/ W M M5 9 y 6 130 jdrawin s, Wh re; e

Patented Dec. 26, 1933 j i p H l j Alexus 0. Lind 1 Chicu go'-and- Gl l Olson 2 V V r .xCanton,'Il1.,- .assignorsto 'International Ha I 4 V e V I I jest Company, v oration ofrNew Jersey.

ApP cationMflr Fmz 9. s c i No; 661004 6 claims.-- flr Th p es inv n n re a es. tra to ip s w rd end at their lower d he have piv ed and in particular to the ,manner of connecting theretothe, arms of;a;rearwardly extending U- the plow-to the tractor, I shaped drawbar, i8. One of the arms of the t a o onhe tediplo s t d s a l t drawbar -1 is ex ende ;u y as at 9, t is the w ,beme ely pu ledat etra wh pr v de an upri ht. a m, e upp e d of w ch 1 plowing, so that up-and down movementsofthe lies above the planeof the drawbar-proper. 'Qne racto s-w e l essw r' une en. uri o h n e mem s. .17 atits u pe e d, -hes l qta tf e PlQW-;- re ire atth mou ed thereo aha d; lever 20am i s ockin plow shall carry its own'depthflgauging means r ack;21, :;,This lever isprovidedwwith an angular, 10 and'iti de rabl h silt -means-sha bea lr rwar lv extending arm 2: to h a p- @5 il ad us ab e,byee de ice oathetraptqr hin portingiink 23v isadiustablywn e At it co ni ac o thew eret rs stat o lowe end th i1i k23 s? p f nfi i si 1 thereon. V the drawbar 18. By this arrangement, movement is t zhr mar ob ec i isgin ti n to eve zowill s rveitoaclius the r w r meet these requirementsby, simpleandeflicient jtically, as will be obvious. I As best seen in Figure W means and to provide connections between'the 3, the: drawbar fhas .pivotally connected .to it at plow. and tractorwhieh will embody means for any selected point on its transverse portion, a a si a propri t a j s m n .Q Y-t e d pth c ng link 4.. lihe coupling link 24,;is congauge on the plowas the-hitch of. the plow to, the inectedi at itsreaxwnd to a draft bracket 25'fixed tractor israised or lowered, :-MQ1B specifically,the ,ontheinnergsideof-the forward-end of a plow main object is tocausethegauge wheelona plow =,,.be1am-2,6-, which extends under the axle housing beam to be raised relativelyto thebeamwhenthe :of the'tractor; and carries the usualplow, bottom .hitchof'theplow islow'ered, andvice versagand ;-27. Theconnectiqnbetween the link 24 ,andthe also for the gauge wheel to be similarl raised "bracket,25 through a transverse pivot m'ember as v1 whe h e l s aw lii edw o tr rt hiehhasoneendsup e w rw ldly The foregoing and other objects, which; willpe .eXtendingJug-on the bracket 25 andit s, other end" I evident to those skilled in theart, ar attained received a sui ab e e ine i t ej' ndof by the structure hereinafter described and theplow beam; Inorder-toprovide for angular claimed, an d'illustrated in the accompanying :7 adjustment of the plgw-and beam; an arcuate r a i link or arm-29 adi s a y co ect the coupling i" Figure ;1 a pl n view of the rear portion of :i'link'24jwithe laterally spaced'point onthemema tractor having a pl w connect dt e eto he "128 -Th conn ct e w the up in Figure 2'is a sideview of the same; v j 'link;2 4;and; the drawbar 18 is such as to permit 1 Figure 3 isa detailplanv view of -the-plow parts .free; lateral and vertical; movement ofthe plow and hitch viewed separately from the, tractor; with respect to the tractonbut the range of vera V p ticalmovementofthecoupling link and, there- .Figure 4 is adetail view. of the plow-glifting flrewof; theaforward end of the-plow beam, is mechanism;

1 V preferably limited, asgby an; upstanding stopior V The inventionis'illustrated in-eonnectier with ,abutmentmernberfiOcarried by the member 28, 40 a tractor having a rear; axle housing 10 from in position-to nt h bottom O the tractor which the diiferentially drivenaxleshafts-rl pro-v body. Tograise lower theplow from andto ject. The shafts 1-1 have the traction wheels-1'2 Voperatingposition,the aggle housingofthe tracter *adjustably secured thereto in any;-suitabl e;ma1;1 :has pivotally' cgnnected theretoa rearwardly exiner. Thetractor'includesiaforwardly extending tending; b ai1 :31;,, thebight portionrof which is ,45 body portion 13 including side sills 14 which exloosely: seated between-laterally spaced pairs of 1 tend toqthe frontuend, of the tractorgwhich is -St18 DS13j STandi33; secured; above,;the{ plow beam supported on di-rigible steeringwheels, notshown. nearits reargenol. Stop-collars 34 at each sidefof The dirigible wheels-are controlled through a theistraps prevent excessivelater-algmovementvof steering wheel 15 locatedadjacent the operator-s th-BEDIQWL Vertical'swingingmovement of the bail opp-seat 16. I H e e r i .31' serves to; raise and lower the plow-andrthis 1 i 'In' the practice of the present-'"invention, 4a swinging movementof the bail-isefiected in-this edepending hanger; member 17 lisbolted or :otherinstance :by acomhined hand;and;:foot lift device wise clamped toeach sillimemberli iiat aboutwthe rmou-nted;10h;the axlev structure oi the tractor. middleof 'the tractor;:as-seeninFigures 11-anflr2. ;"IZhe,1i-f:trde,vioeis carried on "a vertical plate 35 45 5 The;hangermembersareipreferably:inclinectier- Securedjglgngkextgndjng;albgw qbhe a l h i 10 I and tractor.

at one side of the operators seat. This plate has pivoted to it on its inner face, an upwardly extending hand lever 36, which is pivotally connected to a substantially horizontal link 3'7. A short link 37 is pivoted to the lower end of lever 36 and to the shorter upwardly extended arm of a bell crank lever 38 pivoted on the plate 35 below the hand lever. The longer arm of the bell crank lever extends rearwardly and carries a swiveled eye which slidably receives the upper end of a lifting link 39 pivoted on one arm of the ball 31;

A stop nut 40 on the upper end of this link serves to lift or swing the bail upwardly when engaged by the eye on the lever 38. When thebail is lowered, the stop 40 is left sufiiciently above the,

lever 38 to permit floating movementof the bail and its connected plow beam. At its forward end the link 3'7 is pivoted at the middle of a pedal lever 41, the lower end of which is pivoted on a fixed supporting bar 42 riveted to the outer face of the plate 35. The other end of this bar 42 may serve as an anchorage for a coil spring 43,

As the connections described permit free movement of the plow with respect to the tractor, it

is necessary that it be supported in-such a manner as to maintain a'fi xed plowing depth. For this purpose, the forwardend of the plow has upper crank or arm of this axle is journaled'in suitable bracket members'45 depending from the plow beam, and hassecured thereto an upright [arm 46. The arm 46 is connected tothe upstanding arm'19 on the drawbar by means of a link 47, which is preferably formed of relatively adjust- Y able, overlapped sections bolted to each other, as shown in Figures 2 and 3. This link, it will be seen, maintains a' fixed'distance" between the-arm 46 on the crank axle 43- and'the arm 19 onthe drawbar. Therefore, when the drawbar is adjusted upwardly by the lever 20, a'pull is exerted on the link 47 and the crank axle 43 is swung downwardly, thereby lowering the gauge wheel 44' to decrease the depth of plowing Lowering ofthe draft bar will correspondingly raise the gauge wheel and allow the plow to go deeper. It will also be seen that,'when the plow'is-lifted for transport movement of the plow about its hitch, pivot will cause the arm 46 to be thrust "rearwardly to some degreega's the drawbar 18 remains stationary, thereby swinging the gauge wheel upwardly on the beam; thus affording greater clearance for transport purposes.

It will accordingly be clear that the novel arrangement described provides a freely floating plow attachment including a depth gauge carried on the plow and adjustable by means of mechanism'mounted on the tractor and acting on the gauge means through vertical adjustments imparted to the draft connections between the plow It isaccordingly unnecessary to provide a separate adjusting device for the gauge wheel as has heretofore been the practice.

coupled, and means whereby vertical ajustment of the drawbar effects corresponding adjustment 'of the gauge member.

2. ;A tractor plow* connection comprising the combination of a tractor, a plow having a beam supported on'a vertically adjustable gauge wheel, a vertically adjustable drawbar on the tractor to which the gauge wheel is coupled, means on the tractor for adjusting the drawbar, and means connecting the gauge wheel and drawbar for adjusting the gauge wheel in an opposite directionto the adjustment of the drawbar.

3. A tractor plow connection comprising the combination'witha tractor of a drawbar pivoted on the tractor for verticaladjustment, a plow including a beam flexibly coupledto the drawbar,

a cranked axle journaled on the plow beam'for swinging movement vertically and carrying a gauge wheel, an arm fixed to the axle, and a link pivotally connecting said arm with the drawbar at a pointadjacent the pivotal connection between the drawbar'and tractor and above the horizontal plane of the drawbar.

4. A tractor plow connection comprising the combination with a'tractor; of a re'arwardly extending drawbar pivoted on the tractorforvertical adjustment, means on the tractor for adjusting the drawbar,- an upright arm on the drawbar adjacent the axis of said pivotal connection, a

plow including a beam having its forward-end 1715 flexibly coupled to the drawbar, a cranked axle journaled' on the forward portion of the plow beam for swinging movement vertically, an upright arm'fixed to the axle, and a link pivotally connecting said arm w'th the upright r th 3.11

drawbar. V

5. A tractor plow connection comprising the combination witha tractor having a rear axle housing and a body extending forwardly therefrom, oflaterally spaced hangers secured to said body and depending therefrom forward of the f axle housing, a rearwardly extending U-shaped drawbar having its arms pivoted tothe lower ends of said hangers and having one ofits'arms extended upwardly of said point of pivotal con- 'fgg nection, a vertically adjustable link connecting the rear end of the drawbar with theup'per portion of one of said hangers, a plow including a beam extending under the axle housing and having its forward end flexibly connected to the C1 drawbar, a cranked axle journaled on' the forward portion of the plow beam for swinging nection, means for holdingzth'e drawbar'at ading movement vertically, an upright arm fixed lowering the plow, a cranked axle journaled on I the forward portion of the plow beam for swingon said axle, and a link pivotally connecting:

said arm with the upward extension on the drawbar.

ALEXUS c. LINDGREN. GLEN J. OLSON. 

